element
Information about Californium-253:

WikipediaNeutron Cross SectionsX-Ray TransitionsX-Ray Attenuation

    Mass-Energy Data:

    Atomic Mass:253.085127±0.000007amu
    Excess Mass (Δ):79.295083±0.006209MeV
    Binding Energy:1886.078954±0.006218MeV
    β- Decay Energy:0.287661±0.006412MeV
"The 1995 update to the atomic mass evaluation" by G.Audi and A.H.Wapstra, Nuclear Physics A595 vol. 4 p.409-480, December 25, 1995.
Radioactive Decay Data:

  • Spin: (7/2+)
  • Half life: 17.81 days ( 1.53878×10+06 sec., λ = 4.50451×10-07 s-1)
  • Mode of decay:
    β-
    to
    253
    99
    Es
      (Q = 0.285 MeV)   Branch ratio: 99.69 %
  • Mode of decay:
    α
    to
    249
    96
    Cm
      (Q = 6.124 MeV)   Branch ratio: 0.31 %

  • Possible parent nuclides:
    α from
    257
    100
    Fm
R.R.Kinsey, et al.,The NUDAT/PCNUDAT Program for Nuclear Data,paper submitted to the 9 th International Symposium of Capture-Gamma_raySpectroscopy and Related Topics, Budapest, Hungary, Octover 1996.Data extracted from NUDAT database (Jan. 14/1999)